Improvement work by arresting seepage water in the side wall of the Tunnel Conveyor

Amount

Earth work excavation for sand and silt under water (SS20B) earth work excavating and depositing on bank with initial lead of 10m & initial lift of 2m in slush and silt under water upto 0.75m depth requiring the aid of basket and vessels (SS20B) including cost of all materials, labours, lead, lift, etc. complete. a) Without Dewatering

b)With Dewatering

Dismantling the existing RCC for the required width & depth as per the instructions of engineer in charge and disposing the debris 1 Km. away from the site including cost of all materials, labours, lead, lift, curing, etc. complete.

Providing brick work in CM 1:5 using class -II Bricks including cost of all materials, Labours, lead, lift etc., Complete.

Plastering with C.M 1:5, 12mm thick including cost of all materials, Labours, lead, lift, curing etc., Complete.

Providing PCC 1:2:4 using OP/PP cement with 40mm size machine crushed HBG metal including cost of all materials, labours, lead, lift, curing, etc. complete

Providing RCC 1:1.5:3 using OP/PP cement with 12 to 20mm machine crushed HBG metal including cost of all materials, labours, lead, lift, curing, etc. complete. a)without Dewatering

b)With Dewatering

Supplying & providing RTS/MS rod including cutting, bending, tying & fixing in position as per specification including binding wires, cost of all other materials, labours, lead, lift, curing, etc. complete. a)without Dewatering

b)With Dewatering

Providing and laying Bentonite water stop materials (Super stop) of EUCLID CHEMICALS(TREMCO)/Equivalent, of size 25mm x 12mm, a composite wear stop containing expandable, granular bentonite, one edge layered with pressure sensitive adhesive, Installing at 15mm from outer face of wall and applied as per manufacturer's specifications, rate including cost of all materials, labour, lead, lift, hire charges for tools & tackles including taxes etc., complete.

Providing Micro concrete to the Distressed / spalled concrete wall as per the following specification a to f Applying one coat of Nitozinc / equivalent primer after thorough cleaning of rust in the reinforcement, rate including cost of all materials, labour, lead, lift etc., complete. Providing fabricating and erecting slurry tight from work with plywood shutters with suitable supports which do not deform or leak due to pressure of micro concrete etc., including cost of all materials, lead, lift etc., complete. Providing micro concrete using Rendroc RG / equivalent as per manufactures specification. This mixed micro concrete should be placed continuously for an average thickness of 75mm rate including cost of all materials, tools, and plants machineries, labours, lead, lift etc., complete Applying one coat of polymer modified acrylic emulsion (Nitobond AR / equivalent) on the finished surface as a curing membrane rate including cost of all materials, T&P, Labours, lead, lift, etc., complete. Applying DEKGUARD / equivalent primer by spraying to the concrete surface as per manufactures specification rate including cost of all materials, labours, leads, lift etc., complete Applying two coats of DEKGUARD / equivalent top coat to the exposed concrete surfaces by brush / roller coating continuously rate including cost of all materials, labours, lead, lift etc., complete

Supplying and application of single compound sealant , CERA MEC STRIP SEAL 150MM (Or) equivalent after necessary surface preparation such as cleaning the surface and priming the surface with CERA MEC ADHESIVE prior (or) Equivalent to the application of sealant including necessary surface preparation labour material tools & tackles etc., complete.

Providing and injecting Hydrophobic PU injection by grouting Dural Aqua Dam, a hydrophobic polyurethane compound of EUCLID CHEMICALS / equivalent that is injected in concrete and other sound substances to stop water from entering into occupied or unwanted places, initially fixing packers by using suitable heavy duty drill machine along the concrete slab or wall and joints at 300mm c/c and fixing the nozzle in the drilling holes using quick setting mortar SEEDPLUG of Euclid CHEMICALS, rate including cost of all materials, drilling, grouting, hire charges for drilling machine, hire charges for grouting pump with all lead, lift, labour etc., complete. a)Drilling the holes

b) Pressure grouting of Polymer inject grouts SS or M/s Cerachem or Equivalent

Providing two coats of snowcem for the old outer walls including cost of all materials, scaffolding charges, thorough cleaning of surface, labours, lead, lift, curing, etc. complete.

Providing two coats of Acrylic distemper of approved quality, brand & colour for old ceiling & inner wall surfaces including cost of all materials, scaffolding charges thorough cleaning of surface, labours lead lift curing etc., complete.

Malavika Enterprises